gimp_snapshot

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description must carry the behavioral burden. 'Hidden snapshot' communicates that the operation does not produce visible output and is non-destructive. However, it doesn't disclose whether multiple snapshots per image are allowed, whether a previous snapshot is overwritten, or whether any internal GIMP state is changed beyond the hidden capture.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, front-loaded sentence with no filler or redundant information. It packs the core action ('hidden snapshot'), the target ('image's current state'), and the purpose ('show before/after later') into minimal space.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple one-parameter tool with an output schema, the definition provides the essential workflow context. Yet, with no annotations, it omits prerequisites such as requiring a currently open/valid image_id, and it doesn't clarify whether a snapshot must be taken before every edit or how many snapshots are retained. This leaves minor but meaningful gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has no description for image_id, and schema description coverage is 0%. The description never mentions the parameter by name or explains its format or constraints; it only says 'an image's current state,' which weakly implies an image identifier. Since the description must compensate for the missing schema descriptions, it falls short.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb ('Take'), resource ('image's current state'), and unique scope: a 'hidden snapshot' for later comparison. It names the companion tool gimp_render_compare, which immediately differentiates it from related siblings like gimp_render or gimp_render_compare.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The phrase 'so gimp_render_compare can show before/after later' clearly establishes when to use the tool: capture state before modifications so a later comparison is possible. It doesn't explicitly state exclusions or alternative tools, but the reference to the sibling comparison tool provides strong contextual guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.